Muscles of Posterior Thigh MT Flashcards
Long head (biceps femoris) origin
Ischial tuberosity
Long head (biceps femoris) insertion
Head of the Fibula, lateral aspect
Long head (biceps femoris) innervation
Tibial N. (L4-S3)
Long head (biceps femoris) action
Flexion of Knee
Extension of Hip (weak)
Lateral Rotation of Tibia
Short head (biceps femoris) origin
Linea Aspera of Femur
Short head (biceps femoris) insertion
Head of the Fibula, Lateral aspect
Short head (biceps femoris) innervation
Common Fibular N. (L4-S2)
Short head (biceps femoris) action
Flexion of Knee
Extension of Hip (weak)
Lateral Rotation of Tibia
Semitendinosus origin
Ischial tuberosity
Semitendinosus insertion
Pes Anserinus (posterior slip)
Semitendinosus innervation
Tibial N. (L4-S3)
Semitendinosus action
Flexion of Knee
Extension of Hip (weak)
Medial Rotation of Tibia
Semimembranosus origin
Ischial Tuberosity
Semimembranosus insertion
Medial Aspect of the Tibial condyle
Semimembranosus innervation
Tibial N. (L4-S3)
Semimembranosus action
Flexion of Knee
Extension of Hip (weak)
Medial Rotation of Tibia
What are the muscles of the posterior thigh?
Biceps femoris, semitendinosus, Semimembranosus
What is the common origin of all of these muscles?
Ischial Tuberosity
What is the common innervation of these muscles?
Tibial N
What muscle does not originate at the ischial tuberosity or have innervation by tibial N?
Short head of biceps femoris
What is a common function(s) of all posterior thigh muscles?
Flexion of the knee and weak hip extension
What muscles of the posterior thigh act as medial rotators?
Semitendinosus and semimembranosus
